SLS Core Stage Hot Fire Test Explained

NASA will perform a hot fire test of the core stage of the Space Launch System (SLS) rocket on 16 January 2021, at NASA’s Stennis Space Center, Mississippi. During the test, the four RS-25 engines will fire to simulate the stage’s operation during launch. Jeff Zotti, RS-25 program director at Aerojet Rocketdyne, explains the hot fire test, the last of the Green Run test series.
Credit: NASA

[daf.]

My dad helped build this for Boeing and NASA

[sreekrishnanmuralitharan]

Keep posting these wonderful videos and stay ahead of the curve @SciNews

[Telencephelon]

That's good enough for me. You have my permission to launch.

[yannnique]

What is meant with 109% throttle? Shouldn't 100% be the maximum?

[willywgb]

The Russian N1 is the Worlds most powerful Rocket.

[raine]

That's what everyone want to go to space

[chiaricharlie]

Ya what is with 109%? Why is 100 not max? thank you.

[tkarola]

Yeah yeah cool, but will it land? :D joking aside, it's a beast!

[fufu]

Why does Nasa re-design such a powerful rocket instead of building another Saturn V?